Machine fob eosming horse-collars



UNITED sTATEs PATENT oEEioE.

ISAAC DAVIS, OF MECHANICSBURGI-I, OHIO.

MACHINE FOR FORMING HORSE-COLLARS.

Specification of Letters Patent No.

8,482, aated'N-ovember 4, 1851.

To all whom t may concern:

Be it known that I, ISAAC Davis, of Mechanicsburg, in the county of Champaign and State of Ohio, have invented certain new and useful Improvements in Machinery for Blocking Horse-Collars, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing, which forms part of this specification and in which- Figure 1 represents a view in perspective of my collar blocking machine. a plan of a portion of the same, and Fig. 3 is a vertical transverse section of a portion of thesame.

My machine is constructed to block horse collars of various sizes with convenience and expedition, and my invention consists essentially of a moving tapering` block acting in combination with adjustable stationary dies by whose combined action the blocking is eected.

The several parts of my machine as represented in the accompanying drawing` are secured to a strong frame A, the top B, of which forms a table on which the collar to be blocked is supported. This table has an opening c formed in it of suitable dimensions to admit a block of the size required to shape or block the largest collars. Immediately above this table are the dies or mold D, D, by means of which the exterior .form of the collar is determined; these dies consist of a pair of slabs of plank whose adjacent edges are hollowed out as shown in Fig. 2, and are beveled off1 as shown in Fig. 3 to conform to the crease in the collar to which the hames are applied. They are fitted at their hinder ends with straps e, e, which are bent to engage in a strong staple f, secured to the table B, and form hinges on which the pair of dies may be moved toward or from each other. The front extremities of the dies are fitted with ratch plates g, g, whose teeth engage with spring pawls t secured to the table B, and whose corresponding teeth are numbered so that the dies may be set at equal distances on each side of a central line passing longitudinally through the opening in the top of the table. The front extremities of the adjacent edges of the dies are hollowed out to allow them to admit a gripping tongs M which is composed of two movable jaws y', j, and an intermediate stationary one 7c. The latter is fixed firmly to the table at the front extrem- Fig. 2 isity of the opening therein immediately opposite the staple f. The movable jaws are pivoted to each other, and their shanks projecting forward pass beneath a pair of ratch bars a, n, by means of which they can be secured in place when drawn toward each other.

The block O, by means of which the interior form of the collar is determined, is constructed to slide vertically through the opening in the table and between the adjacent edges of the dies upon an upright standard I, whose lower extremity is secured to a cross bar beneath the table and whose upper extremity is steadied by a bar y), which is projected longitudinally from a standard g, at the frontof the table. This block is smallest at its lower extremity, and thence gradually increases in size, its upper extremity being largest. Its hinder side r is parallel with the standard upon which it slides, and its horizontal sections 'are those of the interiors of finished collars. It is fitted at its lower extremity with a strong hooks from which a lever L is suspended. The shorter extremity of this lever is arranged to engage with any one of a seriesl of notches t, formed in a strong standard U, which constitute fulcra to which the lever is successfully applied in drawing the block downward; the longer arm of the lever projects at the side of the-machine in a convenient position to be manipulated by hand. The upper extremity of the block O is suspended from the upper cross bar 79 by a cord fu, which being passed over suitable pulleys is wound upon a windless IV at the front of the machine. This windlass is fitted with a crank X, by means of which it can be conveniently turned by hand, and with a ratchet wheel e whose teeth engage with a pawl y, by means of which the windlass can, when necessary, be prevented from turning to slack the cord and lower the block. The pawl y is fitted with a latch ct, by means of which it can be held out of gear with the teeth oit the ratchet wheel to permit the windlass to turn.

lVhen collars are to be blocked with this machine the lever is disengaged from the admit between them the iinished collar when blocked to its proper shape and size, and are secured in their positions by their respective spring pawls. The extremities of the collar are inserted between the stationary and movable jaws of the gripping tongs, whose Shanks are drawn together to grip the coln lar firmly and are secured by their respective ratch bars n n. The block is now low ered, as far as it will go within the collar, by unwinding the windlass, and the windlass pawl is latched out of gear with its ratchet wheel to permit the further downward movement of the block. The lever is then applied to the lower extremity of the block, and its shorter arm being engaged in one of the notches on the standard U, power is applied to depress its longer arm and thus draw the block downward. As this operation progresses the lever is engaged successively with the next succeeding notches upon the standard, and the cord unwinds from the windlass which turns with the pull upon the cord. As the block is tapering it, in descending, forces the sides of the collar outward against the dies, whose beveled edges limit the distance to which the collar can be moved and give shape to the creases to which the haines are applied, while the exterior of the block shapes the inner sides of the collar. When the block has been depositions of the dies.

pressed suiiiciently to shape the collar, the lever is disengaged from its lower extremity, the pawl of the windlass is dropped into gear, the dies and gripping tongs are released by disengaging their respective spring pawls and ratch bars, and the block is raised to its highest position by turning the windlass. The blocked collar may now be removed and a new one be substituted in its place to be blocked by a repetition of the above operations.

The machine above described is applicable to blocking collars of the different sizes in use, as the position of the dies may be varied and the tapering block is sufliciently small at its lower extremity and large enough at its upper to correspond with the different lVhat I claim as my invention and desire to secure by Letters Patent is- The combination of the moving tapering block with the adjustable stationary dies, the two being constructed and arranged substantially as herein set forth.

In testimony whereof I have hereunto subscribed my name.

IsAAo Davis.

Witnesses:

THOMAS BOND, THOMAS I. GLENDENING. 

